Isaiah has a collection of vintage action figures that is worth $210. If the collection appreciates at a rate of 12.1% per year, which equation represents the value of the collection after 3 years?V=210(1−0.121)3V=210(1+0.121)V=210(0.121)3V=210(1+0.121)(1+0.121)(1+0.121)
Q. Isaiah has a collection of vintage action figures that is worth $210. If the collection appreciates at a rate of 12.1% per year, which equation represents the value of the collection after 3 years?V=210(1−0.121)3V=210(1+0.121)V=210(0.121)3V=210(1+0.121)(1+0.121)(1+0.121)
Identify Values: We need to find the equation that correctly calculates the value of the collection after 3 years with an appreciation rate of 12.1% per year. The general formula for compound interest (which is similar to appreciation) is V=P(1+r)t, where V is the future value, P is the initial principal balance, r is the rate of interest per period, and t is the number of periods.
Substitute Values: Let's identify the values from the problem:Initial value P = $210Annual appreciation rate r = 12.1% = 0.121 (as a decimal)Number of years t = 3Now we can substitute these values into the formula.
Check Given Options: Substitute the values into the formula: V=P(1+r)tV=210(1+0.121)3This equation represents the value of the collection after 3 years, taking into account the annual appreciation.
Final Equation: Now let's check the given options to see which one matches our equation:V=210(1−0.121)3 - This is incorrect because it subtracts the rate instead of adding it.V=210(1+0.121) - This is incorrect because it does not account for compounding over 3 years.V=210(0.121)3 - This is incorrect because it only raises the rate to the power of 3, not the entire term (1+rate).V=210(1+0.121)(1+0.121)(1+0.121) - This is the expanded form of our correct equation and is equivalent to V=210(1+0.121)3.
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